DING Cunzhen,XU Xuanguo.On spillover effect of domestic and foreign grain price fluctuation and its influencing factors [J]. Journal of Shanxi Agricultural University(Social Science Edition),2022,21(5):13⁃23.
In order to explore the spillover effect of domestic and foreign grain price fluctuations and its influencing factors,this paper adopts time-varying spillover index method to put four grain products, including wheat,corn,rice and soybean,into a unified analysis framework,and studies the spillover relationship between domestic and foreign grain price fluctuations from multiple dimensions. Then it analyzes the main factors affecting the spillover The results show that China's grain market is the net recipient of international grain price volatility spillover,and the average spillover effect of international grain price volatility on domestic grain price volatility is 22.11%,which is significantly higher than that of domestic grain price volatility on international grain price volatility by 7.84%. The direct spillover effect of international grain prices on domestic grain prices is larger,while the indirect spillover effect is smaller. Soybean had the largest comprehensive spillover effect, up to 38.64%,followed by corn,wheat and rice had smaller spillover effect,but all kinds of grain are the net recipients of the spillover effect. Grain import and export,international grain supply and demand fundamentals and price support policies are the key factors affecting the spillover of domestic and international grain price fluctuations.
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